Will turn to see onion (7)
I believe the answer is:
shallot
'onion' is the definition.
(shallot is a kind of onion)
'will turn to' is the wordplay.
'will' becomes 'shall' (synonyms).
'turn' says the letters should be written backwards.
'to' reversed gives 'ot'.
'shall'+'ot'='SHALLOT'
'see' is the link.
(Other definitions for shallot that I've seen before include "salad vegetable" , "One may get into a stew" , "Edible onion-like bulb" , "found in the allotment" , "Small onion-like bulb used for seasoning" .)